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SD

SUSTAINABLE DRAINAGE SYSTEMS LIMITED

Taunton
SME

Sustainable Drainage Systems Limited focuses on delivering total water security through solutions for flood prevention, environment protection, and drought mitigation. They provide systems for managing surface water and recycling water.

sdsinfrastructure.com ↗

Summary from the supplier’s website — unverified

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Awarded
£247k
Live
2
Buyers
4
12m
—
At a glance
  • Quick answer
Profile
  • Social value
  • ESG & policies
  • Capabilities2
  • Buyer references
  • Accreditations
Track record · verified
  • KPI performance
  • Contracts2 / 5
  • Top buyers4
  • Category mix
  • Geography
  • Peers5
Trust & risk
  • Red flags0
  • Compliance
  • Modifications
  • News
Company
  • Companies House
  • Financial
  • Org tree
Quick answer — SUSTAINABLE DRAINAGE SYSTEMS LIMITEDUpdated 13 Jul 2026

At a glance · for buyers and watchdogs

SUSTAINABLE DRAINAGE SYSTEMS LIMITED has won £247k across 4 public-sector buyers, with 2 live contracts. No active Companies House risk flags.

Why: top buyer Council of the Isles of Scilly at 100% · 0 active risk flags · 0 modifications.

Decision signals
0Active red flags
ActiveCompany status
2 of 5Live contracts
100%Top-buyer concentration
—Category exposure
0Contract modifications
If you're a buyer:CapabilitiesReferencesKPIComplianceWatchdog?FlagsModificationsConcentrationNews

Social value

Commitments mapped to the Government Social Value Model themes.

⚑ Self-reported
—

No social-value commitments yet

Jobs, skills, environmental, inequality and community commitments appear here once a claimed supplier attributes them to awarded contracts, or once we detect them on the supplier’s website.

ESG & policies vault · 0/5

Key governance & sustainability policies. Published documents link out; missing ones are greyed.

↔ Cross-checked
Net-zero planNot provided✓
Modern slavery statementNot provided✓
EDI policyNot provided✓
Anti-briberyNot provided✓
Data protectionNot provided✓

Capabilities

What this supplier does, where they sit, who they sell to.

◐ From website & notices
Sectors served · 1/8
Central government✓
Local government✓
NHS & health✓
Housing✓
Utilities & energy✓
Financial services✓
Education✓
Defence✓
Services · 3
Flood PreventionSDS surface water management systems help to prevent flooding by collecting and storing water. ↗Environment ProtectionSDS surface water treatment systems protect waterways and ecosystems from contamination. ↗Drought MitigationSDS drought mitigation systems provide a renewable source of water suitable for non-potable purposes. ↗
Frameworks & DPS · 2 from notices
  • Climate Adaptation Scilly - Rainwater HarvestingCouncil of the Isles of Scilly · £247k
  • Newquay Strategic Route: Design, Supply and Installation of Proprietary Highway Drainage SoakawaysCornwall Council · —

Extracted automatically from sdsinfrastructure.com on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.

Case studies · 4

Delivery stories from the supplier’s website. Clients are not yet cross-checked against award records.

◐ From supplier website
Babraham, CambridgeSpecifies SDS integrated water management system. ↗Stortford Fields, HertfordshireSDS installs UK’s largest geocellular stormwater attenuation system. ↗A69 Bridge End, HexhamSDS’s largest Vortex Separator addresses road runoff pollution. ↗Z House, SalfordSDS rainwater recycling system supplies UK’s first zero carbon home. ↗

Extracted automatically from sdsinfrastructure.com on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.

Buyer references

Named public-sector contacts who have agreed to act as a reference.

✓ Confirmed by buyer
—

No buyer references yet

Public-sector buyers can confirm they'll act as a reference for this supplier. Confirmed references — with the contract they relate to — show here.

Accreditations & memberships

Independently issued. Verification dates cross-checked against issuer registers.

↔ Cross-checked
—

No accreditations recorded

B-Corp, ISO, Cyber Essentials, Living Wage and similar credentials appear here once added by a claimed supplier and cross-checked against the issuing register.

KPI performance

Delivery, budget and satisfaction scores reported quarterly by buyers.

✓ Verified
84

No verified KPI scores yet

Once buyers report contract KPIs — delivery on time, on budget, satisfaction, adoption and accessibility — a weighted grade and breakdown appear here.

Contracts · 2 live · 3 historic

Pulled from Contracts Finder & Find a Tender. Most recent first.

✓ From notices
TitleBuyerCPVAwardedValueTermStatus
Supply and Installation of Tanks and Liquid Storage Units
ANGLIAN WATER SERVICES LIMITED—15 Jan 2026—3 yrspending
Climate Adaptation Scilly - Rainwater Harvesting
Council of the Isles of Scilly4411521014 Jul 2022£247k7 moClosed
Newquay Strategic Route: Design, Supply and Installation of Proprietary Highway Drainage Soakaways
Cornwall Council4511100007 Mar 2016—6 moClosed
PRO004827-Goods-Framework-Supply of Submersible Pumping Stations
UNITED UTILITIES WATER LIMITED44611500———Live
Climate Adaptation Scilly - Rainwater Harvesting
Council of the Isles of Scilly————Live
Total live value — · mean award £49k

Top buyers · 4 buyers · top 3 = 100%

Share of awarded value. Concentration fires above 40% for any single buyer.

✓ From notices
1
Council of the Isles of Scilly
2 contracts
100%
since 2022
2
ANGLIAN WATER SERVICES LIMITED
1 contract
0%
since 2025
3
Cornwall Council
1 contract
0%
since 2016
4
UNITED UTILITIES WATER LIMITED
1 contract
0%

Geography

Distribution of awarded value by buyer region.

✓ From notices
UK · schematic only
South West3 contracts
100%
Eastern1 contract
0%
North West1 contract
0%

Peers

Suppliers with overlapping CPVs & buyers (last 24m). SUSTAINABLE DRAINAGE SYSTEMS LIMITED highlighted.

✓ From notices
SupplierSME?Awarded · 24mContracts
AC
Amentum Clean Energy Limited
No£575.0m2
A(
A2R (Altrad Support Services Limited and AtkinsRéalis UK Limited)
No£575.0m2
SH
Shepley
No£575.0m1
N(
NDS (Altrad Support Services Ltd
No£575.0m1
WE
Westinghouse El
No£575.0m1
SD
SUSTAINABLE DRAINAGE SYSTEMS LIMITED
Yes——
Compare peers →

Red flags · 0 active

Automated scan of Companies House status, charges and insolvency records.

✓ Verified
✓ Clean. No active risk signals from Companies House status, charges or insolvency records.

Compliance scorecard

Derived from Companies House filings — not a full supplier-assurance check.

↔ Cross-checked
Trading status
Active
Live at Companies House
Annual accounts
Up to date
Last made up to 31 Dec 2024
Confirmation statement
Due in -53d
Next due 22 May 2026
Outstanding charges
0
No charges registered
Insolvency history
None
No insolvency cases registered
Certifications (ISO, Cyber Essentials, Living Wage, B-Corp, modern-slavery) are supplier self-reported and appear once a claimed profile adds them.

Modifications

Variations to awarded contracts logged under Procurement Act 2023 s.74.

✓ From notices
±

No modifications recorded

No published contract variations for this supplier. Modification notices appear here as they are issued under the Procurement Act 2023.

News mentions

UK trade press & nationals, matched to this supplier.

◰

No news mentions found

We haven't matched any recent UK press coverage to this supplier. Mentions appear here automatically as they're published.

Companies House

Live sync — registered details, directors, PSC and SIC codes.

✓ Live sync

Registered details

Company no.
04433740
Status
Active
Type
Private limited
Incorporated
08 May 2002
Reg. office
Goodwood House, Blackbrook Park Avenue, Taunton, Somerset, TA1 2PX
SIC codes
22230
Last accounts
31 Dec 2024
Next accounts due
30 Sept 2026

Directors & PSC

  • CULLEN, Patrick Gabriel — secretary
    Appointed 07 May 2003
  • CULLEN, Patrick Gabriel — director
    Appointed 08 May 2002
  • Sds Water Group Limited — person with significant control
    ownership of shares 75 to 100 percent · voting rights 75 to 100 percent · right to appoint and remove directors

Financial

Filed accounts from Companies House.

↔ From Cos House
£

No financial filings on record

Turnover, profit and headcount appear here once audited or micro-entity accounts are filed at Companies House.

Org tree

Group structure and ownership.

↔ From Cos House
SUSTAINABLE DRAINAGE SYSTEMS LIMITED
04433740 · this company

Independent. No parent company or subsidiaries recorded at Companies House for this entity.